Foldable bag



FIG. 1 is a perspective view of a foldable bag showing my new design;

FIG. 2 is a front view of the foldable bag of FIG. 1, to which a rear view is identical;

FIG. 3 is a side view of the foldable bag of FIG. 1, to which an opposite side view is identical; and,

FIG. 4 is a top view of the foldable bag of FIG. 1. 

The ornamental design for a foldable bag, as shown and described. 